Wine cooler displays E6 and the compressor or fans may not start; unit may appear dead except for the error code.

Safety warning: Unplug the wine cooler before removing the control panel or PCB cover. Capacitors on the board may hold a charge briefly after power is removed.

Steps:

• 1. Power cycle: Unplug for 10 minutes, then plug back in. If E6 appears immediately with no other operation, suspect the control board.
• 2. Check supply voltage: Verify the outlet provides correct voltage (typically 120V AC in North America). Low or unstable voltage can trigger control errors.
• 3. Inspect control board: Remove the top or rear control cover to access the PCB. Look for burnt spots, cracked solder joints, or swollen capacitors.
• 4. Check connectors: Ensure all harnesses to sensors, fans, and compressor relay are fully seated. A loose harness can sometimes cause communication errors.
• 5. Replace main PCB: If no external wiring issues are found and E6 persists, replace the main control board with the exact LG part number specified for your model. Transfer any jumper settings or dip switches as per service manual.
• 6. Surge protection: After replacement, consider using a surge protector to prevent future board damage from power spikes.

Note: Board-level component repair is not recommended for end users; replacement of the entire PCB is the standard fix.